And ask the People of the Book as well as those who follow no heavenly Scripture: 'Have you also submitted (to Allah)?' If they have submitted to Him, they are indeed on the right way but if they deviate from submitting to Allah, then your duty is merely to deliver the message.
Maksudnya masuk Islamlah kamu! (Jika mereka masuk Islam, maka sesungguhnya mereka telah mendapat petunjuk) dari kesesatan (dan jika mereka berpaling) dari agama Islam (maka kewajiban kamu hanyalah menyampaikan) risalah yang diamanatkan kepadamu (dan Allah Maha Melihat akan hamba-hamba-Nya) lalu diberi-Nya balasan atas amal perbuatan mereka.